* {
    margin: 0;
    padding: 0;
    }
    /* 主体 */
    .content {
    color: #fff;
    background: #000;
    width: 100%;
    height: 100vh;
    }
    .bg {
    /* background: url(../image/bg.jpg) no-repeat center center; */
    background-size: cover;
    }
    .module_box {
    display: flex;
    justify-content: space-between;
    margin: 5px;
    }
    .border-box-content {
    display: flex;
    justify-content: center;
    align-items: center;
    }